EP2036724A2 - Procédé destiné au fonctionnement d'une machine d'impression rotative - Google Patents

Procédé destiné au fonctionnement d'une machine d'impression rotative Download PDF

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Publication number
EP2036724A2
EP2036724A2 EP08016072A EP08016072A EP2036724A2 EP 2036724 A2 EP2036724 A2 EP 2036724A2 EP 08016072 A EP08016072 A EP 08016072A EP 08016072 A EP08016072 A EP 08016072A EP 2036724 A2 EP2036724 A2 EP 2036724A2
Authority
EP
European Patent Office
Prior art keywords
printing
washing
units
unit
printing units
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08016072A
Other languages
German (de)
English (en)
Other versions
EP2036724A3 (fr
Inventor
Matthias Antoni
Thomas Gsell
Erwin Zweimüller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
Manroland AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manroland AG filed Critical Manroland AG
Publication of EP2036724A2 publication Critical patent/EP2036724A2/fr
Publication of EP2036724A3 publication Critical patent/EP2036724A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/10—Rotary lithographic machines for offset printing using one impression cylinder co-operating with several transfer cylinders for printing on sheets or webs, e.g. satellite-printing units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/12—Rotary lithographic machines for offset printing using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices

Definitions

  • the invention relates to a method for operating a web-fed printing press according to the preamble of claim 1.
  • a printing material web to be printed is drawn off from a printing material roll kept ready in the area of a roll changer, transported for printing by printing units and fed to a folding device for further processing.
  • the printing units each comprising a plurality of printing units, are positioned vertically above one another with the formation of printing towers.
  • Each printing unit of a printing unit has a forme cylinder, a transfer cylinder, an inking unit and preferably a dampening unit, ink being applied by means of the inking unit and fountain solution by means of the dampening unit to at least one printing forme positioned on the forme cylinder.
  • the printing plates are typically designed as printing plates, which is why forme cylinders are also referred to as plate cylinders.
  • the printing ink is applied by means of a transfer cylinder to a printing material to be printed, wherein at least one transfer mold is positioned on the transfer cylinder of each printing unit.
  • the transmission forms are typically blankets, which is why transfer cylinders are also referred to as rubber cylinders.
  • Printing units of web presses in particular of newspaper presses, usually have four printing units, with the aid of each printing unit, a partial printing image is applied to the printing substrate to be printed.
  • the transfer cylinder of each printing unit rolls on the one hand on the form cylinder of the corresponding printing unit and on the other hand either on a transfer cylinder of an adjacent printing unit or on a satellite cylinder. Then, when the transfer cylinder of two adjacent printing units roll on each other, the printing substrate to be printed for printing is moved through a pressure gap formed between the two transfer cylinders. Then, however, when the transfer cylinders of the printing units roll on a satellite cylinder, the printing substrate to be printed for printing is moved through a pressure gap formed between the transfer cylinders of the printing units and the respective satellite cylinder.
  • Each printing unit of each printing unit has next to the forme cylinder, transfer cylinder, inking unit and possibly dampening unit also has a washing device, with the washing device of each printing unit, a washing process can be performed within the respective printing unit.
  • a washing process can be an inking unit washing and / or a transfer washing and / or a pressure washing. If a washing process is to be carried out on printing units of a printing unit, then the procedure is such that all washing devices of all printing units of each printing unit are controlled simultaneously or simultaneously. This creates a short time a high demand for detergent and water, so that a high pump performance and large pipe cross-sections are required to provide the washing devices of all printing units simultaneously with detergent and water.
  • the present invention is based on the problem to provide a novel method for operating a web-fed printing press.
  • washing devices of the printing units are triggered in a time-delayed manner in each printing unit for carrying out a washing process.
  • a pair of washing devices are actuated by two printing units at the same time but with a time delay to other pairs of washing devices from two printing units.
  • Fig. 1 shows a schematic section of a web-fed printing press in the area of a printing tower 10 with two vertically superposed printing units 11 and 12, wherein each printing unit 11, 12 comprises a total of four printing units.
  • the printing unit 11 comprises the printing units 13, 14, 15, 16 and the printing unit 12, the printing units 17, 18, 19, 20.
  • the printing tower 10 is therefore a printing tower with a total of eight printing units.
  • Each printing unit 13 to 20 has a forme cylinder 21 and a transfer cylinder 22. Furthermore, each printing unit 13 to 20 has a non-illustrated inking unit and a likewise not-shown dampening unit.
  • the transfer cylinders 22 of adjacent, horizontally juxtaposed printing units 13 and 14, 15 and 16, 17 and 18 and 19 and 20 roll to form a printing gap for a printing substrate 23 to be printed on each other.
  • the printing units 11, 12 of the printing tower 10 are therefore designed as so-called 8-cylinder printing units.
  • Each of the printing units 13 to 20 of the two printing units 11, 12 of the printing tower 10 has in addition to the forme cylinder 21, the transfer cylinder 22, the inking unit, not shown, and also not shown dampening unit via a non-illustrated washing device to the respective printing unit 13 to 20 to carry out a washing process.
  • a washing process is z.
  • each printing unit 11 12 washing devices of the printing units 13 to 20 are actuated in a time-delayed manner to carry out a washing process.
  • each printing unit 11, 12 a pair of two washing devices of two printing units are simultaneously triggered with a time delay to another pair of washing devices of two printing units.
  • washing devices are controlled in such a way that a pair of two washing devices is actuated by two printing units at the same time but with a time delay to all other pairs of washing devices from in each case two printing units.
  • Fig. 1 proceeded so that the washing devices of the printing units 13 and 14, the washing means of the printing units 15 and 16, the washing means of the printing units 17 and 18 and the washing means of the printing units 19 and 20 are each driven simultaneously.
  • the timed washing devices which each form a pair of washing devices of two printing units, are preferably the washing devices of the horizontally juxtaposed printing units 13 and 14, 15 and 16, 17 and 18 and 19 and 20, these printing units preferably are driven by a common bridge drive and each form a printing nip for printing on both sides of the printing material web 23.
  • the time offset in the driving of the pairs of two washing devices each of two printing units 13 and 14, 15 and 16, 17 and 18 and 19 and 20 is preferably only a few seconds, so that the required washing time changes only insignificantly due to the time offset.
  • the time offset between the activation of two pairs of washing devices is between 1 second and 4 seconds, in particular between 2 seconds and 3 seconds.
  • washing facilities of the printing units not all at the same time or simultaneously to control, but rather the washing facilities of To control printing units offset in time, wherein preferably one pair of two washing devices is simultaneously controlled but at different times to other pairs of washing devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP08016072A 2007-09-14 2008-09-12 Procédé destiné au fonctionnement d'une machine d'impression rotative Withdrawn EP2036724A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710043857 DE102007043857A1 (de) 2007-09-14 2007-09-14 Verfahren zum Betreiben einer Rollendruckmaschine

Publications (2)

Publication Number Publication Date
EP2036724A2 true EP2036724A2 (fr) 2009-03-18
EP2036724A3 EP2036724A3 (fr) 2012-01-18

Family

ID=40134790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08016072A Withdrawn EP2036724A3 (fr) 2007-09-14 2008-09-12 Procédé destiné au fonctionnement d'une machine d'impression rotative

Country Status (2)

Country Link
EP (1) EP2036724A3 (fr)
DE (1) DE102007043857A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7407081B2 (ja) * 2020-07-20 2023-12-28 三菱重工機械システム株式会社 印刷機および印刷機の後片付け方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144354A (ja) * 1984-12-19 1986-07-02 Komori Printing Mach Co Ltd 印刷機におけるロ−ラ洗浄装置
DE4338625A1 (de) * 1993-11-12 1995-05-18 Oxy Dry Maschinen Gmbh Verfahren zur vollautomatischen Zylinderreinigung bei Druckmaschinen mit zentralem Leitsystem
DE19501694A1 (de) * 1995-01-20 1996-07-25 Roland Man Druckmasch Steuerung für die Drucktuch-Wascheinrichtung einer Offset-Rotationsdruckmaschine mit mehreren Druckwerken
DE19527249C2 (de) * 1995-07-26 1999-11-11 Grafotec Gmbh Vorrichtung zum Reinigen von Arbeitsflächen einer Druckmaschine
US6327974B1 (en) * 1999-03-01 2001-12-11 Heidelberger Druckmaschinen Ag Spray dampening device having high effective spray frequency and method of using
JP3734221B2 (ja) * 2002-06-28 2006-01-11 株式会社東京機械製作所 ベアラー清掃装置

Also Published As

Publication number Publication date
DE102007043857A1 (de) 2009-03-19
EP2036724A3 (fr) 2012-01-18

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